Type-writing and perforating device.



K H. DREWELL.

TYPE WRITING AND PEHFORATING DEVC. APPLICATION FILED lumi a, 1913A 11637986, I PatemmV Deu. H, 1915 3 SHEETS-SHEETI fil/'w' V9.2. Tg3

H. DREWELL. ww www; AND PERFORMING DEVICE.

APVLlCA'HDN 1115131111126, 1913.

Patented Dec. 14, 1915.

3 SHEETS-SHEET 2.

H, DREWELL. lYPt WRHING AND PERFOHAUNG DEVlCE. APPLICAUON man luNE 6, 1913.

1.163,986. Patented Dec. 14, 1915. 3 SHEETS-SHEET A` UNITED serres Passief OFFICE.,-

HEINRICH DREWELL, OF CHAR-I OTT'ENBURG, GERMANY, ASSGNOB TO"SCHNELL'SETZ MASCHINENGESELLSCHAFT MIT BESCHRNXTER HAFTUNG, OF CHARLOTTEN- BURG, GERMANY.

TYPE-TBITNG AND PEB-FORATING DEVICE Specification of Letters Patent. Patented Dec, 14` i,

Application led June 6, 1913. Serial N o. 772,044.

To all whom it may concern Be it known that I, HEINRICH Dnnwsnn,

l a subject of theGerman Emperor, residing tion of which is controlled hv means of a key board and one. or more shift-keys." the depression of the latter causing the other keys ivhen struck to produce an citer-t ilifl'ennt from the one they may produce without this depression.

The invention is particularly aln'ilicahle to those typewriting machines in which each type-ha1f"('arries two or more types and in which the feeding of theY paper ;^arriage is adapted to thel particular wi-'lth of each character that is being printed` e, (j. the feed of the carriage is smaller when an i than when an m"' is being printed. Typo-writim; machines of this kind comprise generally a plurality Aof'key-levers and a plurality of cross-hars or :so-called universal-hars which are arranged unl'lerneath said lacylevers and extend at right angles to the latter. The key-levers are. each provided with one or more. suitable proiections adapted to select one o1' more oi said universal-bars to be depressed by said key-levers. Each of the universal-hars is operatively connected to a suitable member of the feed-controlling device serving to ront-rol the movement of the paper-carriage, and ,when depressed causes a pre-determined step of the carriage. Thus the depression oi a type-key-lever which iinA parts its movement to one or more of said universal-bars causes a certain feed of the papercarriage, the amount of this feed correspondin with the width of the character printed slmultaneolsly. But if, as here supposed, a shift-key is provided 1n te type-writing machine, the depression of t e shift-key causes the characters printed by means of the type-key-levers to be changed. If for exan'iple a key-lever normally serves to print the character a it will-when struck while the shift-key is depressed-- cause the printing of the character Af As the width of the character normally prznted by depressing :a certain key is not 1n all eases the same as the Width of the character printed during the depression of the shiftkey, this key has to control the feeding of the papel-carriage in 'a suitable manner. Means hitherto known for this purpose provide operatively connecting means between the shift-key and the universal-bars before mentioned for moving` thel latter along the key-evers and presenting!` them to another lgroup ofvprojections' on the'latter. Means of this kind arefor example shown and de# scribed in the drawings and specification of my li. Letters Patent 953,988 dated April 191i). Referring for example to Figure 1 of the drawings of said Lctters'Patent the universal hars and 66 are normally placed opposite'to the projections G7 and 68and by depressing' the y shiftkey may be moved alongv the type levers and placed opposite to the projections 87 and 88. But when using devices of this kind the operator of the ma rhino must take care not to depress Iany keylever before the shift-key-has been perfectly depressed, or, whenrreleased, has not `perfectly returned `to its rest position. Otherwise the projections of the key-levers will come into the way of the shifting movement of the universal bar and the latter vwill be prevented and not completed. In common type writers, however, in which' the steps of the carriage are of equal. width, the shiftkey may be depressed nearly simultaneously with theydepression of any other key and the shift-ingr effect will' be correct if the shifted member, forexample' the platen roll of the paper carriage, comes intoits shifted' position only a very short time before the printing of a character takes place.. Thus those type-writing machines the paper carnage of which is fed in steps of equal width allow a greater speed of working than those typewriting machines in which the step-wise movement of the carriage has been al apted ing machines before mentioned a. number of key-levers Having projections coperate with a number of cross or "'*fselhers causing one or|m`ore-holes tobe piinlehed into a suitablev band.' A device ofthis kind is for example shown and described in the drawings and specification of my U. S. Letters Patent= 851,504 dated April 23, 1907.A

. If e device of this kind is to be provided 1.3 with a shift4 key in order to chengethe combination of holes which are caused to be punched when one`of the common keys is depressed, my presentl invention-may be employed, and it will her-of greater viniporte'ince tha-nin aftype-'yyriting machine.' becauselthe incomplete-shifting of aiperorating device Vnl-fS/f produce on` the band incorrect holes 'which cannot he removed or canceled llike incorrect characters written on a typewriting machine. If, in a type-Writing machine of the kind in question,- the feed of the paper-Carriage, or, in a perfprating device,A the combination of holes to be changed by depressing a shift-key the cooperation of tire key-levers and the universel-hars must he modified somehow. The common wey to do this is to move the universahhars along the key-levers and to present them to another group of projections on the latter. .Vixen employing my invention the movement which serves for modifying the cooperation of the key-levers and the universal bars takes -place in a direction to or from the project-ion or in the-direction or parallel to the direction in which the projections operate, e. g. the two movements produced by the two keys will not hinder each other. Either two series of universal bars or two series of projections are provided and ar- 4G ranged in such manner that they may operate alternativelv only.

Several embodiments of mv invention are diegi'rammatically Aillustrated hy Way of example in the accompanying drawings,

^ -15 wherein Fig. 1 is a sectional side elevation showingr my improved sipparatus in' a typewriter Whose carriage is shifted proportionally to the width ofthe letters. Figs. 2 and 3 are detail elevation and plan views, respectively, of my apparatus as shown in Fig. 1; Fig. fi is a plan View, 'showingr my improved apparatus applied to a hand-performing machine which may be combined with a typewriter if desired, Figs. 5 and 6 are font and side el.evations',"partly in section; respectively, showing: the apparatus illustrated in Fig. 4 and-Figs. 7 and 8 are detail views.

Referring first to Figxl, the numeral 1 iu-designates the main framev of the typewriter, and 2 the paper-carriage which carries the platen-roll 3, and has rollers 4, 4 running settle rails 6, 6. The platen-roll 3 is journaled in fr'ociringeframei whose 55." lower cross-bar 5 carries in theiniddle' be raised equally at both ends.

roller 5 which runs von a rail i'. This mi. 'can be lifted by means of the shift key For this purpose the lever 9 eerrfin l the shift key 8 has an arm 10, which hears against an erin 11 fast on an axle 12 which yf carries the rail 7 by means of tivoadditions?. arms 13, oni? one of being visible in Fig. 1. ihen the .key f5 is (lepre. f axle 12 is rotated by the lever-arms i) and ,11,- and the rail 7 is thus lifted. The relier 5 which runs on the rail 7 is therefore lifted, and with it vboth the frame carrying the platen-roll 3 and the platen-roll itself. @n both sides ofthe latter areside arms 14 of the roll-frame which cause the platen-rollio 'When the shift key'isfdepressed the type 17 carried by the type' lever 15 is printed instead of the type 16 whenever the appertaining key is depressed. This shifting device is known per se. The paper-carriage .2 inuenced by the carriage spring, not shown, has e toothedv rack 2G meshingr with a pinion 2i. fest on vertical axle 22. This axle. cfr-fries e. coller Q3 cerrving the pivots of tivo planet lwfieels Q4. lli/eshinewith the hitter two sun- Wheels :276 freely rotatable on l trie axle 22, and. each rigidlv connected with a r che?. wheel 27 and Q8, respectiveiy. `Aditi table collars on the axle 22 preventaxial displacement of the ratchetrheels Q7, 2S and of the sun-Wheels 25;, 526, and consequently-ipp them in gear4 with the planet wheels. ilntgiiging in the ratchet-Wheels ere special feed 106 members. each of which consists of a fast detent and a loose pawl. `The loose or feed pawl 30 of the. one feed member 30, 33 normally engagesthe ratchet-wheel 2'? and'prevents its being rotated under the intiiience of the. carriage-spring. This feed piiwl 30 is` mounted on anv axle 31 carrying a-reerwardlvdirected varm 3?.. When'this arm 32 is raised, the pawl 30 leavesjthe" heel fi? Y. and the detent 33 rigidly' connected with the ilo pawl 30 enters into 'the ratchet-Whee 2'2". lVhen the arm 32 returns into its normal position, the feed pawl 30 againyenters be" tween the teeth of the ratchet-Wheel Z7 and permits the same to rotate one tooth: The loose or feed pawl 40 of the other feed meinber 40, 43 which engages with the ratchet- Wlieel 28, is fast on the axle and connected with an arm 42. With this pawl 40 the fast detent 43 is connected in such manner that the latter engages in the ratchet-wheel 28 alternately'with the'pawl @and consequently permits -this wheel to rotate one tooth.

Pairs o vertical rods 35, 3 and 45, i6 actuate the arms and d'2. respectively. These rods are notent-edili' rocking; frames 5,0, 51, 52, 53 (Fig. of which 'the tivo former rock about the axle and the two .letter shout the axle 49. Esch of the rocking lever 15 to b9 driven by th@ key *.13 at. iie

free end 01' the key-kwel 61. In th@ nomini] positiun of the uppai'zitub and kei'vr 61 can iniuenve by means Uf il, 1111,12' 63 mig-e of the two uuiveisni imm 35 anni 11G. oi' iwtis simultaneously. The ifiiiiveifu i un .have suitable notches (Fig. im@ mi h i ingu {3J} uf the lyklwyrs can @hier whe h@ iat tei :1re no? to iiiiueiice 111i@ i. rim im Otherwisehe ings .ibut

" .e're mi am sin it the (man :115W p:

lires@ lever 105 is cheeked. A further depression of that end of the lever 105 connected with the key-lever 101 now hasthe effect of raisV ing the other end of the lever 105. This no ward movement does not, however` occur in the case of the auxiliary lever 101 connected to the same key-lever 101, because this anxiliary lever descends into a gap between the l, teeth 115 of the bar 114, and therefore only rocks about its fulcrum in the guidepiece 106. lVhen one of the shift keys 124 is de pressed, the bar 113 raised and the nar v114 lowered. ln this position, when a tyilie-key 100 is depressed the appertaining lever 104 rocks about the point of the corresponding tooth 115 of the comb 113, whereas the corresponding auxiliary lever 105 descends into one of the gaps in the comb 11S, but does not reach the corresponding tooth 115 of the other comb 114, and therefore rocks only about its normal fulcrum at its rear end.

The auxiliary levers 104 and 105 have near their rear. ends a number of lugs 129, over which cross-bars 180 are located. The latter rest at both ends on knife-edge-like fulcrums 131. 132 (Fig. and consequently Arock about the right-hand fulerum 13s or the left-hand fulcrum 131 according as their left or their right end is raised. These bars each have on their top edges` a lug 133, Whereon a small lever 134 rests. levers 134 are mounted to rock about a common axle 135 and at their free ends are each pivotally connected to a rod or push-bar 136. The push-bars 136 dlide in slots in a guide-plate 137 and y,normally support the driving levers 138 of punches 139. When the driving levers 138 are raised they can be brought into engagement with a punchinghar 140. The latter is driven in known manner by suitable cams 141, 142 when holes are to be punched. The raising of the rear end of one of the auxiliary levers 104 and 105 causes not only those cross-bars which are at the momentl located above its lugs 120 to be raised. but also the corresponding lever 134, push-bar 136 and drivingr lever 138. When the punching-bar 140 is'subsequently driven, it causesa corresponding group of holes to be punched in the band. The com binations of punches are therefore determined by the variously arranged lugs 129 on the auxiliary levers 104 and 105.

The stroke of the lug 133 on one of the cross-bars 130 is independent of the position of the auxiliary levers 104 and 105 which raises the particular cross-bar. The length of the front arm of the auxiliary levers 104 and 105 is such that the rear arm has a greater stroke, the more remote the particu lar auxiliary lever is from the middle of the machine, the stroke of the auxiliary levers 104 and 105 located in the middle being in deed about half that of those nearest the Sides of the machine. In this manner com All the i incassa pensation made for the (inference in the effect of the auxiliary levers 101 and 105 on the crossbars 130 owing to the latter all rocking about one point. The stroke of a given lug lll-'S on one of these bar' therefore always the saine. out the strohes of the variou;` lugs i il'cr onifroiu another owing to the lugs liti for raisii ertain crossbars 130 being,r at ilill'erem distances from those fulcrums t the auxiliarv levers 104 and 105 which areV furnished by the con e. This difnee of .st-rohe of the lugs l'lil is rompen sat-ed for b v the flitlerent lengths of the levers 134 and by the dilereut distances of the upper points of application of the push bzirs 130 from the pivots of the driving le vers 13S. These lif-ngths and distances are so chosen that all the driving levers 138 have the same stroke at the radius at which the driving lever brought into engagement with the punching-bar 140.independently of the positions both of the depressed key and of the driving lever which is raised. This compensation of differences. in the stroke by varying the lengths of' the lever-arms is essential for obtaining not only easy and uniform operation of the keys, but also cer tainty that the latter 'will make the correct selection of perforating punches. Easy and uniform operation of the keys is obtained because the full stroke of the kev or a pre determined fraction thereof which is equal for all keys can always be used for raising the driving levers 138. lt is not necessary to interpolate in the stroke of the various keys an idle movement varying in amount in different. keys. Moreover, without appre- Ciably increasing the work of depressing the keys, powerful springs or weights can be arranged to influence the driving-lever 138,` because the. stroke of this lever is small as compared with that of the keys. On the other hand,l owing to their form and mode o1'V support the crossbars 130 are better secured against bending than the otherwise usual frame-like universal bars.

Then qonibining a perforating machine with a tyewriter whose carriage is shifted proportie ally to the width of the letters, the lugs 129 on the auxiliary levers 104 and 105 can serve both for selecting the punches and for selecting and determining the` distance through which the carriage iS shifted.

Owing to thelevers 104 and 105 being fulcrumed at their rear ends only the vpair of bars 113, 114 need be inoved when shifting'. only when a type key is ldepresfied al, most simultaneously' with the shiftmovement does the auxiliary lever 104 corresponding to this type key influence the tooth on a comb connected to the shift key. The latter is therefore always very easy to operate, because large masses of niovilfg parts and considerable friction are obviated.

I claim 1. The combination with key-board meehanism comprising shift means of a plurality of key-levers, a plurality of series of fulcruined universal-mrs arranged transversally to said key-levers and adapted to be actuated thereby, a plurality7 of movable members each carrying the fulerums of one of said Series of universal-bars and when tuated displacing said tuleiums in a direction pai-alle to the aetuating direction of said universal bars thereby making said ries of universal baz-s alternatively operative and inoperative. a shift-key, and connecting 1f' means between said shift-key and said Inova ble members for actuating the latter by means of said shift-key.

2. The combinatien with keyboard meehanism comprising shift means of a plurality of keyelevers. a plurality of series of ful- Cru'ined intern'iediaie meml'iers. operative connectingr means for connecting to each one of said key-levers one member of each of said series of intermediate members` a plurality of movable lulcrums adapted to be alternatively approached to and withdrawn from said intermediate niei'nbers and when approached serving as a lulcrum for one of said series interinediarn nnrinbers thereby makinfy said series of intermediate meln- 'bers alternatively operative and inoperative. a shift-key and operative connecting mans between said shift-key and said fillcrums for operating;r the latter by means of said shift-key,

3. ln a type-writing machine. the couibination. of a plurality of keydeve a pluility of se 'ies of fuleruined universalbars arranged ii r- \er\=il\ lo 'd lcerifdevers and ada, ed ti: la afiuaefi tiiei'`l` a plurality of movable nieuii eli carrying the lul4` termas of one ot :iid it? 'ies olA univerf'ial-lgiai's and when actuated displacing said fulcrums in a direction parallel to the actuating lirection of said universal-bars therelirv makinnr said series of universal-bars alternatively operative and inoperative. a sliil`t-key. connecting means between said shift-key and said movable members for actuating the latter by means of said shift-key, a papercarriage, means for controlling vthe feed of said paper-carriage, and operative conuwting means connecting said univers-ak ba rs to said feed controlling means for operating the latter by means of said universalbars 4. The combination with key-board mechanism comprising shift means, of a plurality of key levers, a plurality7 of series of fulcrumed intermediate members, operative connecting means for connecting to each one of said keyJevers one member of each of said series of intermediate members, a plurality of movable fulerums adapted to he altrnatively approached to and withdrawn from said intermediate members and when approached serving as a fulcrum for one of said series of intermediate members thereby making said series of intermediate members alternatively operative and inoperative, a shift-key, operative Connecting means between said shift-key and said fulerums for operating the latter by means of said shift-key,x and a plurality of universal bars adapted to be Selected and operated by said intermediate members.

ln testimony whereof I have signed my naine to this specification in the presence of two subscribing witnesses.

HEINRICH DREWELL.

Witnesses HENRY HASPER, WoLnEMAR HAUPT. 

